[And it was probably an indictment on Lindsay Gaze and his coaching that he had the GOAT (his son) on his team for 22 seasons plus star players like Copeland, Bradtke, Marcus Timmons and Dave Simmons yet only ever won two championships.]
I think the devil is in the details here.
In the 80's, the Tigers had Gaze and no one else. It was only the 90’s where Gaze was accompanied by other stars. This was an era where you had a great Perth Wildcats group, and the GOAT coach Goorjian whose teams were always strong. Plus other teams popping up for a season or two- eg Giants with prime D-Mac, Chris Jent, Maley, Reidy.
Then, take away 1995 when Bradtke was overseas and 1999 when Gaze was in San Antonio. After 2000 everyone was getting old (Gaze and Copeland turned 35 in 2000) and there were other strong teams in this next era too (eg: Titans with Anstey, D-Mac, Mosley, Jason Smith, Crocs with Sam McKinnon and Rob Rose, etc).
So really, there were only 5 or 6 seasons where Lindsay Gaze had a truly elite roster at his disposal. And it was an era with plenty of strong teams. And they did win 2 championships from 4 grand finals.